CO2 Exchange in an Alpine Swamp Meadow on the Central Tibetan Plateau
Niu, B; He, YT; Zhang, XZ; Du, MY; Shi, PL; Sun, W; Zhang, LM
2017
Source PublicationWETLANDS
ISSN0277-5212
Volume37Issue:3Pages:525-543
AbstractAlpine wetland on the Qinghai-Tibetan Plateau holds the highest organic carbon density of plateau ecosystems and is among the most sensitive areas to climate change. Understanding CO2 exchange and its environmental forces in this specific ecosystem can benefit constraints of carbon budgets from site to global scale under future climate change. Here we investigated CO2 flux measurements from 2009 to 2013 in a wide-distributed alpine wetland, Kobresia littledalei-Blysmus sinocompressus swamp meadow, by eddy covariance (EC) on the central Tibetan Plateau. Results showed diurnal variation of net ecosystem CO2 exchange (NEE) was affected by photosynthetically active radiation (PAR), and this alpine swamp meadow had a high maximum ecosystem photosynthesis rate (Amax) with 32.96 mu mol CO2 m(-2) s(-1). Nighttime ecosystem respiration (Re) rates were well associated with temperature, and average annual temperature sensitivity of Re (Q(10)) was 3.2. Both temperature and relative humidity (RH) played key roles in regulations of seasonal NEE, and their interactive effect was only significant in GS, especially when soil temperature at 10 cm was above 6.3 degrees C. Our results suggested this alpine swamp meadow was a stable CO2 sink with an annual accumulation of - 161.85 +/- 28.02 g C m(-2). However, response of annual Re was more sensitive than GPP to change of temperature and length of growing season (LOG), which implied that future climate warming likely to weaken the CO2 sink of this alpine swamp meadow.
SubtypeJournal
KeywordAlpine swamp meadow Eddy covariance Net esystem CO2 exchange Tibetan plateau
Subject AreaEnvironmental Sciences & Ecology
WOS Subject ExtendedEcology ; Environmental Sciences
WOS KeywordCARBON-DIOXIDE EXCHANGE ; NET ECOSYSTEM EXCHANGE ; GAP FILLING STRATEGIES ; SOIL RESPIRATION ; INTERANNUAL VARIABILITY ; SEASONAL-VARIATIONS ; EDDY COVARIANCE ; GRASSLAND ECOSYSTEMS ; TEMPERATURE ; FOREST
Indexed BySCI
Language英语
WOS IDWOS:000403573000011
PublisherSPRINGER
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44056
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Niu, B,He, YT,Zhang, XZ,et al. CO2 Exchange in an Alpine Swamp Meadow on the Central Tibetan Plateau[J]. WETLANDS,2017,37(3):525-543.
APA Niu, B.,He, YT.,Zhang, XZ.,Du, MY.,Shi, PL.,...&Zhang, LM.(2017).CO2 Exchange in an Alpine Swamp Meadow on the Central Tibetan Plateau.WETLANDS,37(3),525-543.
MLA Niu, B,et al."CO2 Exchange in an Alpine Swamp Meadow on the Central Tibetan Plateau".WETLANDS 37.3(2017):525-543.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Niu, B]'s Articles
[He, YT]'s Articles
[Zhang, XZ]'s Articles
Baidu academic
Similar articles in Baidu academic
[Niu, B]'s Articles
[He, YT]'s Articles
[Zhang, XZ]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Niu, B]'s Articles
[He, YT]'s Articles
[Zhang, XZ]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.